# 02 Maxima idles rough, long start, foul plugs, misfire codes

**URL:** <https://community.cartalk.com/t/02-maxima-idles-rough-long-start-foul-plugs-misfire-codes/9690>\
**Category:** Maintenance/Repairs\
**Created:** [January 22, 2008, 3:13am UTC](https://community.cartalk.com/t/02-maxima-idles-rough-long-start-foul-plugs-misfire-codes/9690 "2008-01-22T03:13:45Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jimmythemechanic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/jimmythemechanic/32/632_2.png) [@jimmythemechanic](https://community.cartalk.com/u/jimmythemechanic)\
**Post date:** [January 22, 2008, 3:13am UTC](https://community.cartalk.com/t/02-maxima-idles-rough-long-start-foul-plugs-misfire-codes/9690/1 "2008-01-22T03:13:45Z")

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I have an 02 Maxima 3.5L, hard starts, idles rough, hwy runs ok, multiple cylinders misfires. I have put new cam crank sensors, 6 new coils, and tune up. Please help as i just came back on here. Thanksssss

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [January 22, 2008, 3:42am UTC](https://community.cartalk.com/t/02-maxima-idles-rough-long-start-foul-plugs-misfire-codes/9690/2 "2008-01-22T03:42:15Z")

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Have you checked for a leaking fuel pressure regulator?

Tester

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**Author:** ![jimmythemechanic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/jimmythemechanic/32/632_2.png) [@jimmythemechanic](https://community.cartalk.com/u/jimmythemechanic)\
**Post date:** [January 22, 2008, 4:54am UTC](https://community.cartalk.com/t/02-maxima-idles-rough-long-start-foul-plugs-misfire-codes/9690/3 "2008-01-22T04:54:57Z")

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I will check on that as i plan to do fuel system next. Nothing done to fuel system except i hooked up a meter with the key on and it reads ok with the pump, but that’s beyond the regulator. I have never seen this and i worked on so many Nissan, Infinity. Thanks for the advice, if you can think of some please advise.

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [January 22, 2008, 11:08am UTC](https://community.cartalk.com/t/02-maxima-idles-rough-long-start-foul-plugs-misfire-codes/9690/4 "2008-01-22T11:08:06Z")

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Specific error codes?? (Like P0123)

Some auto part stores will read them for free, try Advanced Auto Parts or Autozone.

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**Author:** ![winarth](https://avatars.discourse-cdn.com/v4/letter/w/b5a626/32.png) [@winarth](https://community.cartalk.com/u/winarth)\
**Post date:** [January 22, 2008, 6:19pm UTC](https://community.cartalk.com/t/02-maxima-idles-rough-long-start-foul-plugs-misfire-codes/9690/5 "2008-01-22T18:19:14Z")

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How did this start? Did you do anything just before it started? You’ve probably checked this but it sounds like bad or crossed plug wires.